OFFSET
1,1
COMMENTS
1. We may never know if a(n) is defined for all n.
2. We split up the digits of any number > 9 in the pattern, e.g., if n = 11, we search for the pattern "1,2,3,4,5,6,7,8,9,1,0,1,1".
3. The pattern "1,2,3,4,5" does not occur before the 100,000th term in the digit sequence of e.
It appears that a(7) > 5000000. - Rick L. Shepherd, Aug 21 2002
LINKS
R. Nemiroff and J. Bonnell, The first 5 million digits of the number e
MATHEMATICA
p = ToString[N[E, 100000]/10]; t = {1, 12, 123, 1234}; g[n_] := StringPosition[p, ToString[n]][[1]][[1]] - 2; Table[g[t[[i]]], {i, 1, 4}]
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Joseph L. Pe, Apr 01 2002
EXTENSIONS
More terms from Rick L. Shepherd, Aug 21 2002
STATUS
approved